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中华临床医师杂志(电子版) ›› 2023, Vol. 17 ›› Issue (03) : 237 -242. doi: 10.3877/cma.j.issn.1674-0785.2023.03.001

临床研究

冠状动脉旁路移植术后行hs-TnI预测主要心血管不良事件发生的临界值及相关性分析
南文慧, 周丽花, 李珊珊, 荣嵘()   
  1. 100044 北京,北京大学人民医院检验科
  • 收稿日期:2021-12-17 出版日期:2023-03-15
  • 通信作者: 荣嵘

Cutoff value of hs-TnI for prediction of major adverse cardiac events after coronary artery bypass grafting and risk factors for these events

Wenhui Nan, Lihua Zhou, Shanshan Li, Rong Rong()   

  1. Department of Clinical Laboratory, Peking University People's Hospital, Beijing 100044, China
  • Received:2021-12-17 Published:2023-03-15
  • Corresponding author: Rong Rong
引用本文:

南文慧, 周丽花, 李珊珊, 荣嵘. 冠状动脉旁路移植术后行hs-TnI预测主要心血管不良事件发生的临界值及相关性分析[J]. 中华临床医师杂志(电子版), 2023, 17(03): 237-242.

Wenhui Nan, Lihua Zhou, Shanshan Li, Rong Rong. Cutoff value of hs-TnI for prediction of major adverse cardiac events after coronary artery bypass grafting and risk factors for these events[J]. Chinese Journal of Clinicians(Electronic Edition), 2023, 17(03): 237-242.

目的

探讨高敏肌钙蛋白Ⅰ(hs-TnI)在行冠状动脉旁路移植术(CABG)后预测主要心血管不良事件(MACEs)发生的临界值,并进一步分析CABG术后发生MACEs的危险性因素。

方法

收集2020年8月至2021年8月在北京大学人民医院行CABG的患者200例,查阅临床资料和实验室数据,根据术后12 d内MACEs是否发生,将患者分为MACE组(n=15)和非MACE组(n=185)。采用多因素联合诊断的ROC曲线计算术后4~6 h高敏肌钙蛋白Ⅰ(hs-TnI),肌酸激酶-MB亚型(CK-MB),肌红蛋白(MYO)的联合诊断临界值。进一步采用Kaplan- Meier曲线及COX比例风险回归模型筛选CABG术后MACEs发生的危险因素。

结果

CABG术后12 d内预测MACEs发生的最佳联合诊断临界值分别为术后4~6 h hs-TnI 4131.4 pg/ml、CK-MB 24.9 ng/ml、MYO 316.5 ng/ml。ROC曲线下的面积(AUC)为0.741(95% CI:0.617~0.865,P=0.002),其诊断敏感度为53.3%,特异度为85.9%。当术后4~6 h的hs-TnI、CK-MB和 MYO超过联合诊断的临界值(95% CI:0.617~0.865,P=0.002)时,MACEs的发生率在术后显著增加(Log rank,P<0.05)。COX风险回归分析表明,术后hs-TnI和CK-MB是导致CABG术后MACEs发生的主要危险性因素(P<0.05)。

结论

CABG术后4~6 h预测MACEs发生的联合诊断临界值为hs-TnI 4131.4 pg/ml、CK-MB 24.9 ng/ml和MYO 316.5 ng/ml。术后hs-TnI和CK-MB是CABG术后MACEs发生的主要危险因素。

Objective

To calculate the cutoff value of cardiac troponin I for predicting major adverse cardiac events (MACEs) after coronary artery bypass grafting (CABG) and identify the risk factors for MACEs after CABG.

Methods

Two hundred patients who underwent CABG at Peking University People's Hospital from August 2020 to August 2021 were enrolled, and their clinical characteristics were collected. The patients were divided into a MACE group and a non-MACE group according to the occurrence of MACEs or not over a 12-day postoperative period. Clinical, laboratory, and outcome data were collected.

Results

The 200 patients were classified into the MACE (n=15) and non-MACE (n=185) groups. Based on receiver operating characteristic curve analysis, the optimal joint hs-TnI, CK-MB, and MYO cut-off levels at 4~6 h after surgery for predicting postoperative MACEs were 4131.4 pg/ml, 24.9 ng/ml, and 316.5 ng/ml, respectively. The area under the curve of the thee indexes combined for predicting postoperative MACEs was 0.741 (95% confidence interval: 0.617~0.865, P=0.002), with a sensitivity of 53.3% and specificity of 85.9%. When the hs-TnI, CK-MB, and MYO levels exceeded the joint cut-off levels, the incidence of postoperative MACEs was significantly increased (Log rank P<0.05). Cox regression analysis showed that hs-TnI level and CK-MB level were the main risk factors for MACEs after CABG (P<0.05).

Conclusion

An hs-TnI level of 4131.4 pg/ml, CK-MB level of 24.9 ng/ml, and MYO level of 316.5 ng/ml are the cutoff values for predicting MACEs after coronary artery bypass grafting. Hs-TnI level and CK-MB level are the main risk factors for MACEs after CABG.

表1 CABG患者的术前临床及实验室基本资料
临床资料 非MACEs组(n=185) MACEs组(n=15) Z/χ2 P
年龄[例(%)] 0.416 0.519
≥60岁 126(68.1) 9(60)
<60岁 59(31.9) 6(40)
男性[例(%)] 136(73.5) 9(60.0) 1.271 0.260
BMI[M(Q25,Q75),kg/m2 25.2(22.9,27.4) 24.0(22.1,26.4) -0.422 0.673
吸烟史[例(%)] 85(45.9) 5(33.3) 0.892 0.345
饮酒史[例(%)] 61(33.0) 4(26.7) 0.252 0.616
收缩压[M(Q25,Q75),(mmHg)] 135(123,141) 130(111,134) -1.523 0.128
舒张压[M(Q25,Q75),(mmHg)] 80(72,84) 78(69,82) -0.313 0.754
脉搏[M(Q25,Q75),(次/min)] 76(70,78) 77(72,80) -1.523 0.128
病史[例(%)]
高血压 133(71.9) 9(53.3) 0.953 0.329
糖尿病 72(39.0) 5(33.3) 0.183 0.669
肾功能不全 9(4.9) 0(0) 0.800 0.371
高血脂 34(18.4) 3(20.0) 0.024 0.876
脑卒中 32(17.3) 0(0) 3.211 0.073
LVEF[M(Q25,Q75),(%)] 55.3(44.8,61.2) 54.0(42.2,60.1) -0.361 0.718
术前血清指标[M(Q25,Q75)]
血红蛋白(g/dl) 131.0(119.0,141.0) 128.5(113.5,139.8) -0.239 0.811
血小板109(cells/L) 199.0(163.0,239.8) 170.5(155.8,228.2) -0.763 0.446
肌酐(μmol/L) 82.0(68.5,97.5) 82.0(71.5,89.0) -0.631 0.528
尿素(μmol/L) 6.0(4.9,7.2) 5.6(5.0,6.7) -0.429 0.668
谷氨酸氨基转移酶(U/L) 21.0(16.0,34.0) 26.0(16.3,40.3) -0.551 0.582
天门冬氨酸氨基转移酶(U/L) 20.0(16.3,30.8) 20.5(15.8,38.3) -0.805 0.421
葡萄糖(mmol/L) 5.7(4.9,7.6) 5.5(5.1,8.0) -0.534 0.593
D-Dimer(mg/ml) 110.1(76.0,191.8) 150.0(85.8,340.3) -1.197 0.231
hs-TNI(pg/ml) 11.4(5.4,22.8) 10.8(7.2,19.5) -0.103 0.918
CK-MB(ng/ml) 1.0(0.7,1.6) 0.9(0.8,1.4) -0.487 0.626
MYO(ng/ml) 18.8(15.0,25.2) 18.5(13.6,29.2) -0.085 0.932
BNP(pg/ml) 73.0(37.0,185.8) 113.0(28.5,227.5) -0.361 0.718
术前用药[例(%)]
β-受体阻滞剂 44(23.8) 4(26.7) 0 0.989
钙离子拮抗剂 58(31.4) 8(53.3) 1.957 0.162
血管紧张素转换酶抑制剂 15(8.1) 1(6.7) 1.807 0.613
利尿剂 16(8.6) 2(13.3) 0.363 0.547
抗血小板药 77(41.6) 4(26.7) 1.324 0.250
口服降糖药 42(22.7) 3(20.0) 0.008 1.777
胰岛素 21(11.4) 2(13.3) 0.004 0.841
图1 CABG患者术后4~6 h,12 h,24 h的MYO,CK-MB,hs-TnI变化趋势图
图2 CABG术后hs-TnI、CK-MB和MYO预测MACEs的最佳联合诊断ROC曲线
图3 术后4~6 h hs-TnI、CK-MB和MYO预测MACEs发生的Kaplan-Meier曲线
表2 COX回归分析CABG术后MACEs发生的危险因素
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